The Vicious Ex's Guide to Clearing the Game [Quick Transmigration]

Every story has someone everyone loves to hate, yet whose role is crucial to the main characters' romance.

That universally despised NPC is called the villainous ex.

[Dungeon One: The cowardly ex who shoves his boyfriend into a horde of zombies at death's door and flees to save himself

Dungeon Two: The gold-digging ex in an urban romance who drains his boyfriend's savings and cheats on him with a rich second-generation heir

Dungeon Three: A trophy-wife stepmother who marries a rich man, then tries every dirty trick to seduce the stepson she once dumped

Dungeon Four: A mission-taker who abandons her husband and child after completing her task, returns to the cultivation world, and becomes a cultivation furnace

...]

Putaoi was borrowed by the Administration from a restricted-content novel next door.

They made it sound wonderful. Putaoi only had to fill in as an NPC and finish his own storyline. The rest had nothing to do with him.

It would be easy. He just had to play the ex in different dungeons and let the main characters use him to gain experience.

Putaoi nodded. That sounded fine.

As long as it didn't stop him from eating his fill.

He had a few bad habits from his old line of work. If he didn't mention them beforehand, that shouldn't count as lying on his resume, right?

As the story progressed, the auxiliary System following Putaoi realized something was wrong.

Twelve times over, something was very wrong.

Why had the powerful leader of the base, the one his Host had nearly gotten killed, gone from shouting about revenge and hatred to becoming Putaoi's side piece?

And now he was competing with the zombie king for the job.

And the male lead from the rental-room romance whose savings had been drained... had something else been drained, too?

The rich father and son were even harder to figure out. They both mocked each other for keeping a low-class canary... so why were they fighting to put Putaoi's name in their wills?